I have had implants, crowns, orthodontia etc.
I did incidentally have them done overseas, but was living there at the time.
I can't imagine having complicated work done in just a few appointments, no matter how coordinated the specialists.
For an implant, you need a couple of appointments beforehand, the actual day of the surgery, then an appt to get your stitches out, then a few monitoring appts.
A crown is at least two appts, without any followup.
If you are talking about having implants, you already have missing teeth, so ideally need to have some orthodontia as well. I don't see how you can have this by distance dentistry.
What you need is a team of specialists who all work together.